Pipe-flanging machine.



MOKIBBEN. 4

mm; FLANGING MACHINE.

APPLICATION FILED APR. 9. I906.

WITNESSES.

-PATENTED JAN. 1, 1907.

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Afronmsvs Np. 340,154. v 'PATENTED JAN.'1,1907'.

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PIPE FLANGING MACHINE.

AHLIO'ATIOH FILED APR. 9, me.

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JNVENTORZ liz ATTORNEYS THE uumus PETERS cm, wnsumamql. D; c.

CHARLES R. MoKIBBEN, OF PITTSBURG, PENNSYLVANIA.

PlPE-FLANGl NCiMACHlNE.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed April 9. 1906- Serial No. 310.608.

To all whom it may concern:

Be it known that I, CHARLES R. MOKIB- BEN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Pipe-Flangin Machines, of which the following is a spec' cation. 1

My invention relates to machines for flanging the ends of pipes; and its object is to provide an improved steady-rest for the pipes and an improved mechanism for turning the flanges on the pipes so that they will be true and accurately at right angles to the pipes. My improvements are applicableto ordinary lathes by substituting the same for the usual lathe-tools and rests.

Referring to the drawings, Figure 1 is a side elevation of a lathe equipped with my invention; Fig. 2, a plan of my improved flanging device in position to commence the flanging operation; Fig. 3, a similar view showing the position of the flanging device at the close of the flanging operation; Fig. 4, a front elevation of my improved steady-rest with the pipe unflanged; Fig. 5, a vertical section of the same with the pipe flanged; Fig. 6, a plan similar to Fig. 2, showing an attachment for use with large pipes Fig. 7 an elevation showing my steady-rest equipped with a pipe-cutting tool, and Fig. 8 a section on the line 8 8 of Fig. 7. 1

On the drawings, 1 represents the lathebody provided with the usual rotatable chuck 2- and my improved steady-rest 3 and the bending device 4. The steady-rest 3 has the upper half 5 hinged on the pin 6. The halves of the same are secured together by the pivoted link 7 and the wedge-shaped key 8, The pipe 9 to be flanged extends through a central opening in the steady-rest, which is provided with radially-movable blocks 10,

. carrying rollers 11 to bear against, support,

and hold steady the pipe as it is rotated by the rotatable chuck 2L The blocks are adjusted and held in any adjustment by the non-traveling screws 12, threaded in the blocks.

13 is the flange or flanged collar which is slid on the pipe 9 before the flanging operation. The flange 14 of this collar rests against the radially-adjustable blocks or supports 15, which are provided with shoulders 16, which may, if preferred, engage the periphery of the flange 14, as shown on Fig. 5. The

blocks 15 are adjusted by the screws 17. The steady-rest is held in the required place on the lathe bed or body 1 by the bolts 18 and the keys 19.

The bending device 4 has the body 20 adjusted along the bed 1 by the hand-Wheel 21. The tool-rest 24 is movable transversely of the body 20 by the handle 25, asis common in tool-rests in lathes.

The top of the rest 24 carries the bendingtool, constructed, preferably, asfollows: A top plate 26 and a bottom plate 27 are bolted to a spacing-block 28, through all of which extends the T-bolt 29,.having itshead 30 clamped to the tool-rest 24 by the nut 32. The lever 33 is pivotally secured to the ears 34, (only one shown,) carried by the plates 26 and 27, and is provided with the roller 35, which'bears against the end of the tube 9 and forms the flange thereon. The free end of the lever 33 is connected by the link 36 to the block 37, which by means'of the handle 38 is movable transversely of the slide-rest 20 and the pipe 9. Opposite the lever 33 the plates 26 and 27 carry the rollers 39, which bear against the interior of the pipe 9 dia: metrically opposite the roller and take all lateral strain from the lever-support, permitting it to be loosely mounted, as by the bolt 32. The forward end of the pivot-bolt 6 has an eye in which the bar or rod 40 is adjusted radially toward and from the pipe 9. The inner end of the bar carries a roller 41 to bear against the face of the flange 14, especially during the latter part of the flanging operation, 'to prevent the roller 35 from canting or moving the flangein other words, to hold the flange 14 constantly against the blocks 15, so that the flange on the pipe 9 shall be true. The rod is supported also by the pin 42, seated in the steady-rest. brought to bear firmly against the flange 14 by means of the hand-wheel 43 working as a nut on the pivot 6 and against the side of the steady-rest opposite the roller.

In order to flange pipes larger than the pipe 9, I provide the attachment 44, which consists of a curved piece of metal having one end secured to the lugs 45 on the plates 26 and 27 and the other end to the lugs 34, to which the lever 33 is shown pivoted on Fig. 3. The middle of the attachment 44 is bowed out away from the lugs 34 and 45 and forms a support by means of which the lever 33 may be secured, so as to bend properly the The roller is end of the tube 9, which is larger than the tube 9.

In order to cut off the end of the pipe in case it is not suitable for forming into a flange, I provide at least one of the blocks in the steady-rest with the cutter 46, which is clamped thereto by the metal straps 47 and the bolts 48, the cutter lying between the block and said straps.

The operation is as follows: The pipe 9 is placed in the chuck 2 and in the steady-rest 3 in the usual manner, the latter being rearwardly of its working position. A furnace of any approved construction is placed over the end of the tube and kept there until the tube is'sufliciently heated, when it is removed. The collar has also been heated and placed on the pipe. The steady-rest is moved forward, so as to leave the proper length of the pipe projecting to form the flange thereon, the flange of the collar having its rear face resting against the dogsv or blocks 15. The bending-tool is moved toward the pipe by the wheel 21, so that the rollers 35 and 39 bear against the interior of the pipe at the opposite ends of its horizontal diameter, as shown in Fig. 2. The chuck 2 is now-set in motion, and the handle 35 at the same time turning the end of the pipe outwardly until the flange on the pipe has been bent so as to lie against thevfront face of the flange 14 of the collar 13, as shown in Figs. 3 and 5. As the tube-flange is pressed against the flange 14 by the roller 35 toward the close of the operation, the hand-wheel 43 is turned so as to draw the roller 41 against the said flange 14 to prevent its canting or tipping. This insures a perfectly true flange at a right angle to the axis of the tube. The roller acts as a holddown for the collar, and if the flange 14 is not gripped by the shoulders 16 of the dogs 15 'it acts as well as an antifriction device for the flange 14, which will then turn with the pipe.

When a large pipe is to be flanged, an attachment 44 of the proper size is used, as hereinbefore described and as shown on Fig.

6. The operation does not diifer'from that given above.

When it is desired to cut off the end of the pipe 9 before beginning the flanging operation, the cutter 46, which is normally held by the straps 47 so as to be above the shoulders 16, is lowered so as to be below the end of the dog 15, as shown in Figs. 7 and 8, and securely clamped by the straps 47. As the chuck 2 rotates the pipe an attendant gradually feeds the cutter down by applying a tool to the screw 17. Anynumber of the dogs 15 may be provided with cutters.

I do not restrict myself to the precise details shown and described.

I claim 1. In a steady-rest for pipe-flanging machines, radially adjustable blocks, antifriction-rollers carried by said blocks and arranged to support and steady the pipe and radially-adjustable dogs adapted to engage and support the flanged collar on the pipe.

2. In a steady-rest for pipe-Hanging machines, means pressing against the flange of the collar on the pipe to prevent the canting of the collar by the pressure of the flangingtoo 3. A steady-rest for pipe-flanging machines, consisting of two parts, a pivot-pin connecting them together, a holddown carried by said pivot-pin and adapted to be brought against the face of the flange of the collar on the pipe, and means for moving the pin longitudinally.

4. A steady-rest for pipe-flanging machines, consisting of pivotallyconnected members, a holddown carried by the pivotpin and adjustable toward and from the axis of the steady-rest, and a nut on said pivot pin to vmove the holddown against the flange of the collar on the pipe.

rotating the pipe, a slide-rest movable toward and from the pipe, a flanging-tool carried by said slide-rest and provided on one side with an antifriction-roll to bear against the interior of the tube and on the other side with a flange-turning device.

6. In a-pipe-flangin machine, a pivoted flange-turning lever, a lock, and a link connecting the lever and the block, and means for moving the block transversely of the pipe.

7. In a pipe-flanging machine, a flanging device adapted to enter the end of the tube, antifriction means on one side of the device, and a bending-tool on the other side thereof, comprising a lever, a flanging-roller carried thereby, and means for moving said lever so as to cause the roller to gradually turn a flange on the end of the pipe.

8. In a pipe-flanging machine, a steadyrest for the pipe, means for rotating the pipe therein, a slide-rest adjustable longitudinally of the pipe, a tool-rest adjustable transversely of the pipe, a flange-turnin tool carried by the tool-rest, and means independent of the tool-rest for causing the said tool to bend a flange on the pipe.

9. In a pipe-flanging machine, a bendingtool, a support for the same, and means for adjusting the pivoted point of the tool transversely of the support.

10. In a pipe-flanging machine, a support ing position, a flanging-tool adapted to be detachably secured to said support, an arm adapted to be detachably secured to said support and to hold a flanging-tool in a second working position.

11. In a pipe-flanging machine, a support, an arm adapted to be detachably secured thereto and projecting laterally therefrom, and a flanging-tool adapted to be supported 5. In a pipe-flanging machine, means for adapted to hold a flangmg-tool in one workon said arm, whereby arms having different from the pipe to support a collar on the pipe, 10 lateral extensions may be severally secured and a pipe-cutter adjustable along one of said to said support. 1 do s toward and from the pipe.

12. In a pipe-fiangin machine, a steadyigne d at Pittsburg, Pennsylvania, this 3d 5 rest for the ,pipe, dogs a justable toward and day of April, 1906.

from the pipe to support a collar on the pipe, 7 CHARLES R. MOKIBBEN.

and a pipe-cutter carried by one of the dogs. Witnesses:

13. In a pipe-flangin machine, asteady- F. N. BARBER, rest for the pipe, dogs a justable toward and O. E. EGGERS. 

